Which organisms are multicellular eukaryotes, with the majority being photosynthetic producers?
a. plants
b. animals
c. fungi
d. bacteria
e. archaea
a
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How is it that Earth has less CO2 in its atmosphere than Venus, even though both planets likely outgassed the about the same amount of CO2 during their development? a. Earth absorbed most of the CO2 into its oceans
b. Venus absorbed most of the CO2 into its oceans. c. Earth lost most of its CO2 because of weak gravity. d. Venus rotates too slowly to lose any of its CO2. e. Venus retained much of its CO2 in polar ice.
A magician can make a candle look as if it is burning under water by focusing light from a candle flame burning in air directly on top of an underwater candle. To do this you want to use a (Hint: eliminate those that cannot work.)
A. concave mirror farther than one focal length from the burning candle. B. a convex mirror farther than one focal length from the burning candle. C. a biconcave lens farther than one focal length from the burning candle. D. a concave mirror closer than one focal length to the burning candle. E. a convex lens closer than one focal length to the burning candle.
The antinode of a standing wave represents a point of
A. no motion B. maximum motion
When an object reaches its terminal speed, its acceleration is zero
Indicate whether the statement is true or false